Automatic calendar clock



May 5, 1925. v 1,536,647

A. ANDRESEN AUTOMATIC CALENDAR CLOCK Fed Nov. 10, 1925 vfaalllllllll",

Pave/n d, manus nd'esenj .slots for 'the displayl Patented May 5, 1925.'

UNITED STATES .AMANDUS ANDRESEN, 0F BROCKTON, MASSACHUSETTS.

'AUTOMATIC CALENDAR CLOCK;

Application filed November 10, 1923. Serial No. 674,069.

To @ZZ 107mm t may concern.' l

Be it known that I, AMANDUS ANDRESEN, a citizen of the United States, and a resident of Brockton, in the county of Plymouth and Commonwealth of Massachusetts, have invented certain new and useful the days of the week therein, a second apron much longer than the other and terminally wound on roll all the months of the year, 866 in number, a spring mechanism for actuating rollers upon which the aprons are carried, and an cscapement controlled bythe clock for permitting the aprons to shift a single dayspa ce once a day, preferably at midnight. U

ln the. drawings forming part of this specification, Fig. 1 is a front elevation of a calendar clock embodying my invention, parts thereof being represented as broken away and in section. Fig.g2 is a side sectional elevation on the line 2-2 in Fig. 1. Fig. 3 is a detail enlarged View of the escapement.

The clock 1, its face 2 and hands 3 are of well known construction, but with the lower section of its case 4 adapted to contain the Vcalendar mechanism, the face 2 being extended downward and formed with of the days of the week. and for the months and days of the month. As shown in Fig. 1, the name of each month is repeated for each day of the month, instead of having a separate apron for the names of the months and for the days of thel month. This simplifies considerably the mechanism. and does not require' more than a single setting once a year and an occasional additional one for leap year.

'lhe weekly apron lG is preferably made long enough to carry two weeks of names, and passes about a large roller 7 and in front of two spaced rods 9 to retain its exposed portion close to the slot 5. This roller is comparatively short, occupying less than half the width ofthe case 4, and is fixed ers carrying all the days of f lpawl 31. and then,

upon a shaft 1() which extends the entire width of the case, being rotatably supported at lts ends in the sides 11 of the case. Also mounted on the shaft but loose thereon is a second large roller 12, which is made to turn with the shaft in one direction by a ratchet 13 and, pawl 14, the pawl being attached to the roller and the ratchet fixed upon the shaft.

Below the rollers 7 and 9 is located a small roller 15 loose upon a shaft 1G and forcibly rotated in one direction by a coiled spring 17; and below this small roller is a second small roller 19 fixed upon a shaft 20 which projects a short distance outside the case-side 11 to permit a winding key to be engaged therewith, as at 21. A leaf spring 22 pressed against the shaft keeps this roller rom turning too easily.

Attached at one end to the roller 15 is a long apron 23 bearing all the days of the year thereon; passing therefrom upl over the large roller 12; thence d'own between the rods 9 and a slot 5 in the case-front, and

l attached at its other end to the small roller By applying a key to the shaft-end 21 and forcibly turning the shaft 20, the small roller 19 is turned, the apron 23 is wound thereon, at the same time unwinding its other terminal portion from the roller 15 and winding-the spring 17.

To enable a smaller number of turns of the spring to sutiice for the many required of the small rollers 15, 17, l provide multiplying gearing comprisinga spur gear 24 meshing with a pinion 25 on a shaft 2G, the pinion 25 being attachedto 'a spur gear 27 which meshes with a 'pinion 27 attached to the small roller 15, while the gear 24fhas a ratchet wheel mounted on the shaft 16 beside it. and a pawl 31 engaging thc ratchet wheel. The latter is attached to theshaft 16 so that when the shaft is forcibly turned bv the spring 17 the ratchet wheel communicates power to the gear 24 through the through the train of gearing described, delivers a considerably increased number of revolutions to the roller 15 which is loose on the shaft 16.

The clock work controls the movements of the two aprons 6 and 23 through the agency of an escapement consisting of an escape wheel 32 fixed on the shaft 10 between thc two large rollers 7, 12, and a rcciprocative pallet member 33, the latter be,- ing designed to be given a single movement onceI a day and thereby to'permit a movement of the two aprons which will move the past day out of sight and bring a new date into sight through the slots 5. f

The pallet member 33 is slidably supported by a spindle 34 to which it is. Xed by means of adjusting nuts 35 and 41, but kept from turning by an arm 36 shown in Fig. 1. Rotatable on this spindle is a spur gear 37 having a cam hub 39 which, by its engagement with a pin 40 projecting from the Spindle, gives a limited longitudinal movementA to the latter every time the gear completes a revolution, and ,thereby allows a tooth of the escape wheel 32 to pass the pal-f lets and the new date toI be presented. A leaf spring 38 moves the spindle and pallet member in opposition to the-cam 39. By turningthe nuts 35, 41, the pallet member 33 can be adjusted on the spindle 34 to properly present the pallets to the .escapement wheel 32.

The gear 37 is connected With the hourhand spindle 42 to make a complete turn once a day only, for which 'the gear 37 meshes with a, pinion 43 which is connected with-a gear 44 meshing with a gear 45 on the spindle 42, the dimensions of the gears and pinion being such that for each revolution of the spindle 42, the gear 37 makes but half a turn, and vconsequently anfentire revolution once in twenty-four hours.

l Once a year, preferably on Jan. 1, the key is applied to the shaft 20 and the latter rotated until the long apron 23 has been unwound from the small roller 15 suiciently to present J an.4 1 nearthe other end of the apron to the slot 5, the pawl and ratchet 13,

'14 permitting the roller 12 to rotate without disturbing the roller 7. I prefer to Aprovide the apron 23 with 366 days, Showing thereon Feb. 29th'. Hence on leap years, noadjustment needs to be made to the apron 23; but upon the other years thesmall roller 19 is to be turned forward at the presentation of Feb. 29 to display Mar. y1 instead thereof.

It isv well to provide the rollers 7 and 12 with pins 46 to engage holes 47 in the aprons and thereby to prevent slippage ofl the aprons thereon.

What I claim as my invention is:

1. The combination of an escapement comprising a spindle supported to have alon- .gitudinal movement, an escapewheel, a pallet member carried by said spindle to engage said wheel, a cam hub rotated by said clock once in a day, a pin projecting from said `spindle to be engaged by said cam hub for moving the spindle and hence the pallet' member in one direction, and a spring for ojppositely moving the spindle and member.

2. The combination of an escapement comprising a spindle slidably supported, a gear wheel loose thereon having a cam hub, gears and pinions connecting said gear with said clock to rotate once in twenty-four hours, a pin carried by the spindle engaging said cam hub, the opposite end of said spindle being threaded, an escape wheel controllingsaid calendar, a pallet member loose on said spindle and engaging said escape wheel, a spring pressing Said spindle to hold said pin against said cam hub, and nuts turning on the. threaded end of said spindle for adjusting the position of the pallet member thereon.

In testimony that'I claim the foregoing invention, I have hereunto set my hand this 8th day of November, 1923.

AMANDUS ANDRESEN. 

